import java.util.Scanner;

public class Demo3 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("输入一个月份:");
		int month = sc.nextInt();
		if (3 <= month && month <= 5) {
			System.out.println("春天");
		} else if (6 <= month && month <= 8) {
			System.out.println("夏天");
		} else if (9 <= month && month <= 11) {
			System.out.println("秋天");
		} else if (month >= 1 && month <= 12) {
			System.out.println("冬天");
		} else {
			System.out.println("输入错误");
		}
	}
}
